drm_dp_mst_topology.c and old compilers

[Paul E. McKenney]

Hello!

A box with GCC 4.8.3 compiler didn't like drm_dp_mst_topology.c.  The
following (lightly tested) patch makes it happy and seems OK for newer
compilers as well.

Is this of interest?

							Thanx, Paul

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diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
index 20cdaf3..232408a 100644
--- a/drivers/gpu/drm/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/drm_dp_mst_topology.c
@@ -5396,7 +5396,7 @@ struct drm_dp_aux *drm_dp_mst_dsc_aux_for_port(struct drm_dp_mst_port *port)
 {
 	struct drm_dp_mst_port *immediate_upstream_port;
 	struct drm_dp_mst_port *fec_port;
-	struct drm_dp_desc desc = { 0 };
+	struct drm_dp_desc desc = {{{ 0 }}};
 	u8 endpoint_fec;
 	u8 endpoint_dsc;